Question

昨天我问了一个关于从外部类文件中获取结果的问题。我现在明白了。我现在需要帮助理解的是如何从外部类中获取字符串到方法中。这是为了返回一个字符串或整数，我可以用来给我的系统用户一些关于他的输入是否被接受的反馈。我想知道是否有人可以在这个问题上帮助我。这是外部课程：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Data;
using System.Data.SqlClient;

/// <summary>
/// This code file saves title information. It is used by both the addTitleFromLansweeper and addTitleManually pages.
/// </summary>
public class AddTitle
{
    public static void ExecuteInsert(string name, string type, string total)
    {
        int rows = 0;
        //Creates a new connection using the HWM string.
        using (SqlConnection HWM = new SqlConnection(Connections.ConnectionHWM()))
        {
            //Create a Sql String that will only execute when the combination of values in the entry form are unique.
            string sql = " IF NOT EXISTS "
                     + " ( SELECT  1 "
                     + " FROM tblSoftwareTitles "
                     + " WHERE Softwarename = @SoftwareName "
                     + " AND SoftwareSystemType = @Softwaretype "
                     + " ) "
                     + " BEGIN "
                     + " INSERT tblSoftwareTitles (SoftwareName, SoftwareSystemType, TotalLicences) "
                     + " VALUES (@SoftwareName, @SoftwareType, @Licences); "
                     + " END ; ";
            //Open the connection.
            HWM.Open();
            try
            {
                //Create an Sql command.
                using (SqlCommand addSoftware = new SqlCommand
                {
                    CommandType = CommandType.Text,
                    Connection = HWM,
                    CommandTimeout = 300,
                    CommandText = sql
                })
                {
                    //Add parameters to the Sql command.
                    addSoftware.Parameters.Add("@SoftwareName", SqlDbType.NVarChar, 200).Value = name;
                    addSoftware.Parameters.Add("@SoftwareType", SqlDbType.Int).Value = type;
                    addSoftware.Parameters.Add("@Licences", SqlDbType.Int).Value = total;
                    try
                    {
                        //Execute the query.
                        rows = addSoftware.ExecuteNonQuery();
                        if (rows >= 1)
                        {
                            //If  a row is added then show a success message box.
                            Alert.Show("Software has been saved!");
                        }
                        else
                        {
                            //If a row isn't added then show a failure message box.
                            Alert.Show("Software title already exists");
                        }
                    }
                    catch (System.Data.SqlClient.SqlException ex)
                    {
                        //If there is a problem with execution then show a Message with the exception
                        Alert.Show(ex.Message);
                    }

                }
            }
            catch (System.Data.SqlClient.SqlException ex)
            {
                string msg = "Insert Error:";
                msg += ex.Message;
                throw new Exception(msg);
            }

        }
    }
}

我知道私有静态void不会返回结果。我一直在寻找一种方法来将它作为私有静态字符串，声明一个包含在我的警告框中的消息的字符串。然后，代码隐藏文件使用该方法，获取该字符串方法，然后显示警报。

我是否在追逐一个松散的结局？我一直在使用using语句中使用的类型必须可以隐式转换为'system.idisposable'。这个方法适用于数据集但不能使用我希望传递回我的asp页面的简单字符串。

在此之前，非常感谢任何帮助。

从asp.net中的外部类获取字符串返回

0 个答案: